Renesas SH7781 User Manual
Page 675
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13. PCI Controller (PCIC)
Rev.1.00 Jan. 10, 2008 Page 645 of 1658
REJ09B0261-0100
31
MSB
LSB
0
PCI bus data
SHwy data
1. Little endian
A' B' C' D' A
B
C
A' B' C' D' A
B
C
A
B
C D
PCI_Addr[2] = 1
PCI_Addr[2] = 0
31
MSB
LSB
0
PCI bus data
SHwy
data
D C B
A
D' C' B' A'
D C B
A
D' C' B' A'
A
B
C
PCI_Addr[2] = 0
PCI_Addr[2] = 1
2. Big endian
Note: PCIAddr[2]: PCI bus AD[2]
D
D
D
Buffer data
Buffer data
Figure 13.14 Endian Conversion from PCI Bus to SuperHyway Bus
(Byte Swapping: TBS = 1)
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